html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: linear-gradient(160deg, #1d4ed8 0%, #0f172a 100%);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: #fff;
  border-radius: 16px;
  padding: 40px 32px 32px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto 16px;
}

.login-header h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 700;
  color: #0f172a;
}

.login-header p {
  margin: 8px 0 0;
  color: #64748b;
  font-size: 0.95rem;
}

.form-label {
  font-weight: 600;
  color: #334155;
}

.login-system-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.login-system-option {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  margin: 0;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  color: #334155;
  user-select: none;
}

.login-system-option input {
  margin: 0;
  accent-color: #1d4ed8;
}

.login-system-option:has(input:checked) {
  border-color: #1d4ed8;
  background: #eff6ff;
  color: #1e40af;
}

.form-control {
  height: 44px;
  border-radius: 8px;
}

.login-btn {
  height: 44px;
  border: none;
  border-radius: 8px;
  background-color: #1d4ed8;
  font-weight: 600;
}

.login-btn:hover {
  background-color: #1e40af;
}